<!DOCTYPE html>
<title>Reference for position:sticky elements should respect the right constraint</title>

<style>
.group {
  position: relative;
  width: 250px;
  height: 150px;
}

.scroller {
  position: relative;
  width: 200px;
  height: 100px;
  overflow-x: auto;
  overflow-y: hidden;
}

.contents {
  height: 100%;
  width: 500px;
}

.indicator {
  background-color: green;
  position: absolute;
  top: 0;
}

.box {
  height: 100%;
  width: 100px;
}
</style>

<script>
window.addEventListener('load', function() {
  document.getElementById('scroller1').scrollLeft = 100;
  document.getElementById('scroller2').scrollLeft = 175;
  document.getElementById('scroller3').scrollLeft = 250;
});
</script>

<div class="group">
  <div id="scroller1" class="scroller">
    <div class="contents">
      <div class="indicator box" style="left: 200px;"></div>
    </div>
  </div>
</div>

<div class="group">
  <div id="scroller2" class="scroller">
    <div class="contents">
      <div class="indicator box" style="left: 250px;"></div>
    </div>
  </div>
</div>

<div class="group">
  <div id="scroller3" class="scroller">
    <div class="contents">
      <div class="indicator box" style="left: 300px;"></div>
    </div>
  </div>
</div>

<div>You should see three green boxes above. No red should be visible.</div>
